Hi @damos39390
Did you check if the front shock absorbers are OK e.g. no leaks, working OK etc?
Park the vehicle on level ground and then go to a front corner of the vehicle and push down on the corner as hard and as far as you can and then let go.
Do this rapidly 3 or 4 times to set up a rocking motion in the car. When you let go for the last time check how many times it continues to bounce on its own.
Do this on both sides at the front of the vehicle.
Normally it should just rise up and then settle back to the at rest position although it may bounce just once more and then stop.
If it continues to bounce a few more times then the shock absorbers need replacing.
Faulty shock absorbers can cause vibrations to be felt, especially at highway speeds.